GEO600

The Innerste is a river in Lower Saxony, Germany. It is a right tributary of the Leine river and 101 km (63 mi) in length.

Sarstedt (German: Bahnhof Sarstedt) is a railway station located in Sarstedt, Germany. The station is located on the Hanoverian Southern Railway. The train services are operated by Deutsche Bahn, Metronom and Erixx. The station is also served by the Hanover S-Bahn.

Gleidingen is a part of the town of Laatzen in the district of Hanover, in Lower Saxony, Germany. It is situated south of both Hanover and the center of Laatzen.

Rethen (Leine) is a part of the town of Laatzen in the district of Hanover, in Lower Saxony, Germany. It is situated south of both Hanover and the center of Laatzen.

Pattensen (German: [ˈpatn̩zn̩] ) is a town in the district of Hanover, in Lower Saxony, Germany. It is situated approximately 12 km (7 mi) south of Hanover.

The Calenberg is a hill in central Germany in the Leine depression near Pattensen in the municipality of Schulenburg. It lies 13 km west of the city of Hildesheim in south Lower Saxony on the edge of the Central Uplands. It is made from a chalk marl slab (Kalkmergelbank), has a height of 70 m above NN and was formed almost 100 million years ago at the beginning of the Upper Cretaceous series in Cenomanian stage. The Calenberg became historically important as a result of the fort, stronghold and castle built as the main residence of the House of Hanover.

Calenberg Castle (German: Burg Calenberg, later called Schloss Calenberg and Feste Calenberg; ruins known as Alt Calenberg) was a medieval lowland castle in central Germany, near Schulenburg in the borough of Pattensen, 13 km west of the city of Hildesheim. It was built as a water castle in 1292 by the Welf duke, Otto the Strict, in der Leine river meadows between 2 branches of the Leine river on the southern part of the chalk marl hill of the Calenberg. At the start of the 16th century it was converted into a fort (Feste). In the 15th century, Fort Calenberg gave its name to the Welf Principality of Calenberg. Following the Thirty Years' War it lost its military importance and was slighted. Today it is a ruin with underground vaults that are surrounded by high ramparts.

Sarstedt is a town in the district of Hildesheim, Lower Saxony, Germany. It has approximately 18,500 inhabitants. Sarstedt is situated 20 km south of Hanover and 10 km north of Hildesheim. Sarstedt station is on the Hanoverian Southern Railway and is served by the Hanover S-Bahn. The GEO 600 gravitational wave detector is located nearby. The former independent municipality Giften has been a part of Sarstedt since 1 March 1974.

Laatzen is a town in the district of Hanover, in Lower Saxony, Germany. It is situated directly south of Hanover.

Hannover Messe/Laatzen station is a Category 4 station in the German town of Laatzen near the Hanover fairground (German: Messegelände Hannover). It is normally served only by the Hanover S-Bahn. During major events such as CeBIT and Hanover Messe, all passing regional and long distance trains stop at the station. The station opened in 2000, replacing the old Messe station, which was located on a spur line in the fairgrounds.

ZAG-Arena (formerly Preussag Arena and TUI Arena) is an arena in Hanover, Germany. The arena opened in 2000 and holds 10,767, during hockey or handball matches and up to 14,000, during concerts. It is the biggest indoor-venue in the Hanover Region and most major concerts are held there. The arena is situated at the Expo Plaza in the Expo 2000 grounds, in the south of Hanover, astride the Kronsberg and Mittelfeld areas.

Convention Camp is a conference on digital future, social media and web culture. It takes place annually since 2008 at Hanover fairground and is the largest BarCamp in Germany.